RCINPower EX4220 Heavy-Lift Motor

The RCINPower EX4220 is a 42-size heavy-lift motor with a 42 x 20 mm stator, built for VTOL aircraft and large multirotors swinging 13-inch triple-blade props on 10–12S. The 380KV winding pulls up to 8 kg of thrust per motor on 12S, and its efficiency peak sits in the 6–13 A band where a VTOL spends most of its cruise.

Key features

• 12N14P winding with 40 mΩ internal resistance for high torque on 13-inch props

• 8011 g peak thrust on an HQ1309x3 prop at 44.4 V and 78.9 A

• Above 85% efficiency between 6 and 13 A; 2387 g at 11.1 A (4.84 g/W) at half throttle on the same prop

• 6 mm hollow shaft standing 24.5 mm above the bell

• 30 x 30 mm mount with four M4 holes for large VTOL and heavy-lift arms

Specifications

• KV: 380

• Configuration: 12N14P

• Stator: 42 mm diameter x 20 mm height

• Shaft: 6 mm hollow, 24.5 mm above the bell

• Motor dimensions: 50.3 mm diameter x 40.7 mm

• Weight: 310 g

• Mounting: 30 x 30 mm, 4x M4

• Battery: 10–12S LiPo

• Idle current (10 V): 1.6 A

• Internal resistance: 40 mΩ

• Max current: 79.2 A

• Max power: 3516 W

• Thrust at 44.4 V, full throttle: 7771 g (GF1308x3), 7891 g (GF1310x3), 8011 g (HQ1309x3)

Pair each motor with a 12S-rated ESC of at least 80 A continuous. Full-throttle test temperatures reached 79–85 °C after only 5 seconds, so treat peak thrust as climb reserve and size the airframe to cruise in the efficient 6–13 A band.